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Old 01-02-2017, 06:27 PM   #1
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Question for my setup experts, for the high bite carpet tracks the hot thing is the aluminum chassis, but is it absolutely necessary ? The added weight is a thing, but what setup changes would be needed to run well with the carbon chassis, this is in stock type classes.
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Old 01-02-2017, 06:33 PM   #2
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I would say yes, its not only the added weight down low but the aluminum chassis resists flexing unlike a graphite chassis.
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Old 01-02-2017, 06:55 PM   #3
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If you are even a marginal driver that has a tendency to hit the wall or somehow always get tangled up on the track with other car, stay away. They might resist flexing, but once they bend, they are done.

I really think the chassis are a sales gimmick for this reason, thicker carbon lower and upper decks could accomplish the same thing, but not sell as many damaged replacements. To try and stiffen the chassis, try things like using all the chassis stiffeners that come in the kit, or solid toe blocks vs split blocks.
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Old 01-02-2017, 07:05 PM   #4
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I agree, tweak an aluminum chassis and they're done. Although when testing alloy versus graphite back to back on carpet, i find the car is so much easier to drive with aluminum with the same settings allowing me to push the car harder without any traction rolls.

Thicker graphite may work but it dramatically changes roll centers right off the bat. That is why aluminum is ideal cause they mimic the same thickness of their graphite counterpart with reduced flex and can maintain the original roll centers.
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Old 01-02-2017, 07:07 PM   #5
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I have been out of racing for a while, this past August got back in, and the aluminum chassis was it. But there are a few people I race with that are fast with the carbon chassis. I like to be able to get to weight easily and put the weights where I want/need to. So the things I am looking for are the thoughts you gave such as different ways to get the car stiff enough if needed. Plus I think it will help when I am not running on the black carpet. I have both chassis for my cars just looking for some setup theories/ideas for the Snowbirds in amateur/stock TC class.
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Old 01-02-2017, 08:42 PM   #6
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If your running carpet TC in the USA u need an alloy chassis. In general our grip is much higher than Europe or Asia.
The stiffer the better
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Old 01-02-2017, 09:15 PM   #7
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Hanulec said stiffer is better lol
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Old 01-02-2017, 09:57 PM   #8
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Quote:
Originally Posted by Racermac73 View Post
Hanulec said stiffer is better lol
That's what she......nah that's too easy lol
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Old 01-03-2017, 03:02 AM   #9
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Quote:
Originally Posted by hanulec View Post
The stiffer the better
That's what she's told me
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Old 01-03-2017, 04:14 AM   #10
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Ehat car do you have? But for starters you eant to reduce the cars steering if you use a carbon chassi. You can go with 500cst oil rear and 400cst front, also you can shim the f/r susp blocks a 0.5mm or something lower to get a steady car. And next i would begin to add weightin the car, if the car weighs 1370-1380grams it will make the car not traction roll as well.

Dont forget that the weight you put on the car also works as flex reducer if you put them in a good spot. If you find the chassis too soft you can take a screw, nut and a thick shim and fasten into some holes on the car thats not used to hinder the car flexing in those spots.
There are many things to do in this case, hope this helped a little!

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